Data recording machines



May 18, 1965 v. w. SPARROW 3,184,160

DATA RECORDING MACHINES Filed July 18, 1961 27 Sheets-Sheet l INVENTO/Z Vernon wo rkins Sparrow ATTORNEXS y 8, 1965 v. w. SPARROW 3,184,160

DATA RECORDING MACHINES Filed July 18. 1961 27 Sheets-Sheet 2 INVENTOR Vernon Wurkins Sparrow ATTORNE y;

May 18, 1965 v. w. SPARROW 3,184,160

DATA RECORDING MACHINES Filed July 18, 1961 27 Sheets-Sheet 3 vernogyvclrkins Sparrow A TTORA/EY} y 8, 1965 v. w. SPARROW 3,184,160

DATA RECORDING MACHINES Filed July 18, 1961 27 Sheets-Sheet 4 INVENTOR Vernon Wcnkins Sparrow ATTfORA/Z-DG May 18, 1965 v. w. SPARROW DATA RECORDING MACHINES 27 Sheets-Sheet 5 Filed Jul}, 18, 1961 INVENTOR Vernon Watkins Sparrow ATTOIZ NE y;

May 18, 1965 v. w. sPA'RRow DATA RECORDING MACHINES 27 Sheets-Sheet 6 Filed July 18, 1961 Fig 4B.

I INVIENTOR Vernon Warkins Sparrow ATTORNEYS May 18, 1965 v. w. SPARROW DATA RECORDING MACHINES 27 Sheets-Sheet '7 Filed July 18, 1961 INVENTOR Vernon Watkins Sparrow v 57 2 g I Z I ATTORNE y 18, 1965 V. w. SPARROW 3,184,160

DATA RECORDING MACHINES Filed July is, 1961 27 Sheets-Sheet 8 Fig.5&

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DATA RECORDING MACHINES Filed July 18, 1961 27 Sheets-Sheet 9 lAlVE/VTOR Vernon Workins Sparrow A TTolzlvsys DATA RECORDING MACHINES Filed July 18, 1961 27 Sheets-Sheet 1O /NVEA/ TO K Vernon Watkins Sparrow @Q M, %y?%%,

A TTO/ZNE 5 May 18, 1965 v. w. SPARROW DATA RECORDING MACHINES 27 Sheets-Sheet 11 Filed July 18, 1961 Fig.6.

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May 18, 1965 v. w. SPARROW 3,184,160

DATA RECORDING MACHINES Filed July 18, 1961 27 Sheets-Sheet 12 lA/l/E/VTOR Vernon Watkins Sparrow mv gyaaw A TTOR IVE Y5 27 Sheets-Sheet 13 Filed July 18, 1961 Vernon Watkins Sparrow A TTORA/E Y5 May 18, 1965 v. w. SPARROW DATA RECORDING MACHINES 27 Sheets-Sheet 14 Filed July 18, 1961 INVENTOR Vernon Watkins Sparrow ATTORNE 7 5 Filed July 18, 1961 May 18, 1965 v. w. SPARROW 3,184,160

DATA RECORDING MACHINES 27 Sheets-Sheet 15 INVENTOR Vernon Watkins Sparrow ATTORNEY;

May 18, 1965 v. w. SPARROW 3,184,160

DATA RECORDING MACHINES Filed July 18, 1961 27 Sheets-Sheet 16 Fig, 106?: we

INVENTOR Vernon Watkins Sparrow A TTORNEY May 18, 1965 v. w. SPARROW DATA RECORDING MACHINES 2.7 Sheets-Sheet 17 Filed July 18. 1961 lNVENTO/l Vernon Watkins Sparrow BY w w r wl ATTORNEY} May 18, 1965 v. w. SPARROW DATA RECORDING MACHINES 27 Sheets-Sheet 18 Filed July 18. 1961 R O W M m m. S S n H m 7 W B m 4 5 3 n 33 i 0 a r p- 4 W b a 10 3 a w H 3 F m I h m HHH'IIIHUU AU firm m3 ATTORNEY) May 18, 1965 v. w. SPARROW DATA RECORDING MACHINES 27 Sheets-Sheet 19 Filed July 18,- 1961 wOom uNQQQ 0mm INVENTOR Vernon Watkins Sparrow B7 W W/9 m ATTORNEY} May 18, 1965 v. w. SPARROW DATA RECORDING MACHINES Filed Julj l8. 1961 27 Sheets-Sheet 20 /NVE/VTOR Vernon Watkins Sparrow 

1. A SUBTRACTION UNIT COMPRISING A SUCCESSION OF SECTIONS INCLUDING A FIRST SECTION AND A SECOND SECTION CORREPONDING RESPECTIVELY TO A LOWER ORDER DIGIT AND THE NEXT HIGHER ORDER DIGIT OF THE MINUEND ELEMENT, OF THE SUBTRAHEND ELEMENT AND OF THE REMAINDER ELEMENT OF A SUBTRACTION OPERATION, SAID SECOND SECTION INCLUDING A GEAR WHICH OCCUPIES A ZERO POSITION AT THE COMMENCEMENT OF A SUBSTRACTION OPERATION AND WHICH, IN A FIRST PHASE OF THE SUBTRACTION, IS ROTATED FORWARDLY OR BACKWARDLY FROM ZERO POSITION ACCORDING TO WHETHER THE VALUE OF THE HIGHER ORDER DIGIT OF THE SUBTRAHEND IS GREATER OR SMALLER THAN THE VALUE OF THE DIGIT OF CORRESPONDING ORDER OF THE MIMUEND, THE MOVEMENT OF THE GEAR BEING PROPORTIONAL TO THE DIFFERENCE BETWEEN THESE VALUES, SAID FIRST SECTION INCLUDING A STEPPED ROTARY CAM ASSOCIATED WITH SAID GEAR, THE CAM OCCUPYING A ZERO POSITION AT COMMENCEMENT OF SUBTRACTION AND FURTHER, DURING THE FIRST PHASE OF SUBTRACTION BEING ROTATED FORWARDLY OR BACKWARDLY FROM THE ZERO POSITION ACCORDING TO WHETHER THE VALUE OF THE LOWER ORDER DIGIT OF THE SUBTRAHEND IS GREATER OR SMALLER THAN THE VALUE OF THE DIGIT OF CORRESPONDING ORDER OF THE MINUEND, SAID UNIT FURTHER COMPRISING MEANS OPERATIVELY CONNECTING SAID ROTARY CAM AND SAID GEAR SUCH THAT SAID GEAR IS AUTOMATICALLY RETURNED TOWARDS ZERO POSITION THROUGH A ONE DIGIT ARC OF MOVEMENT IN THE EVENT OF MOVEMENT OF SAID CAM HAVING BEEN IN THE FORWARD DIRECTION, AND SAID CONNECTING MEANS INCLUDING A LEVER LOCATED IN THE FIRST SECTION MOVABLE BETWEEN A FIRST POSITION IN WHICH A FEELER ON THE LEVER INTERCEPTS SAID CAM AND A SECOND POSITION TO WHICH THE LEVER IS MOVED BY FORWARD ROTATION OF THE CAM FROM SAID ZERO POSITION THEREOF, THE LEVER REMAINING IN ITS FIRST POSITION IF THE CAM IS ROTATED BACKWARDLY, SAID LEVER CARRYING A STOP WHICH PROTUDES INTO THE SECOND SECTION SAID CONNECTING MEANS FURTHER COMPRISING, A RACK LOCATED IN SAID SECOND SECTION MOVABLE INTO MESH WITH SAID GEAR AFTER ROTATION OF SAID GEAR FROM SAID ZERO POSITION AND A CARRIER FOR SAID RACK ALSO LOCATED IN SAID SECOND SECTION, THE RACK BEING PIVOTALLY MOUNTED UPON SAID CARRIER FOR MOVEMENT INTO AND OUT OF MESH WITH SAID GEAR, SAID CARRIER BEING RECIPROCABLE BETWEEN A FIRST POSITION WHICH IT OCCUPIES AT THE COMMENCEMENT OF A SUBTRACTION AND A SECOND POSITION, SAID CONNECTING MEANS STILL FURTHER COMPRISING YIELDABLE URGING MEANS COUPLED TO SAID RACK FOR BRINGING SAID RACK INTO SAID SECOND POSITION AFTER THE RACK HAS BEEN MOVED INTO MESH WITH THE GEAR AND ONLY AFTER SAID LEVER HAS BEEN MOVED TO ITS SECOND POSITION, SAID STOP THEN OCCUPYING A POSITION IN WHICH IT IS CLEAR OF THE PATH OF THE CARRIER, WHILE IN SAID FIRST POSITION OF THE LEVER THE STOP INTERCEPTS SAID PATH, SAID POSIBEING RETURNED TOWARDS ITS ZERO POSITION BY MOVEMENT OF SAID CARRIER TO SAID SECOND POSITION AND THE CONSEQUENT MOVEMENT OF SAID RACK. 